Extending the velocity-dependent one-scale string evolution model

  title={Extending the velocity-dependent one-scale string evolution model},
  author={Carlos J. A. P. Martins and E. P. S. Shellard},
  journal={Physical Review D},
We provide a general overview of the velocity-dependent one-scale model for cosmic string evolution and discuss two further extensions to it. We introduce and justify a new ansatz for the momentum parameter k, and also incorporate the effect of radiation back reaction. We thus discuss the evolution of the basic large-scale features of cosmic string networks in all relevant cosmological scenarios, concentrating in particular on the ``scaling'' solutions relevant for each case. In a companion… 
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